Preparation method of anti-freezing solution

Abstract

The invention discloses an anti-freezing solution preparation method, which comprises: 1) sequentially adding water, ethylene glycol, a thermal stabilizer, a scale inhibitor and an antioxidant into a stirring machine according to a weight part ratio, stirring, uniformly mixing, heating to a temperature of 20-55 DEG C, and carrying out a reaction to prepare a product A; (2) sequentially adding an anti-freezing agent, a defoaming agent, a corrosion inhibitor and an emulsifying agent into a stirring machine in parts by weight, stirring, uniformly mixing, heating to 60-70 DEG C, and reacting to prepare a product B; and 3) sequentially adding the product A prepared in the step 1) and the product B prepared in the step 2) into a stirrer, stirring, uniformly mixing, heating to 30-60 DEG C, and reacting to finally obtain the anti-freezing solution. The lubricating oil has the beneficial effects of being simple and easy to operate, good in freezing resistance, stability, abrasion resistance and corrosion resistance and long in service life.

Description

Technical Field

[0001] This invention relates to the field of antifreeze preparation technology, and more specifically to a method for preparing antifreeze. Background Technology

[0002] The full name of antifreeze should be antifreeze coolant, meaning a coolant with antifreeze properties. Antifreeze prevents the coolant from freezing and cracking the radiator or damaging the engine cylinder block or head when the car is parked in cold winter. Antifreeze is a coolant containing special additives and is mainly used in liquid-cooled engine cooling systems. Antifreeze has excellent properties such as preventing freezing in winter, preventing boiling in summer, preventing scale buildup year-round, and preventing corrosion.

[0003] Chinese Patent Publication No. CN106244121A discloses a method for preparing antifreeze, which includes the following steps: 1) Preparing an antifreeze composition: Heat stabilizer, scale inhibitor, antioxidant, and antifreeze are measured and mixed evenly in a mass ratio of 18-60:3-15:3-20:15-60 to obtain an antifreeze composition; 2) Preparing product A: The antifreeze composition is added to water in a mass ratio of 30-60:40-70, and stirred evenly to obtain product A; 3) Preparing antifreeze: An antifoaming agent is added to product A in a mass ratio of 100:0.1-0.5, and stirred evenly to obtain antifreeze; the heat stabilizer is one or two of high-purity urea, sodium acetate, and potassium nitrate in any proportion. The scale inhibitor is one or more of the following: PAAS, sodium polyaspartate, potassium polyglutamate, and disodium ethylenediaminetetraacetate; the antioxidant is one or more of the following: 2,6-tributyl-4-methylphenol, bis(3,5-tributyl-4-hydroxyphenyl) sulfide, pentaerythritol tetrakis[β-(3,5-tributyl-4-hydroxyphenyl)propionate], dodecyl alcohol ester, tetradecyl alcohol ester, and octadecyl alcohol ester; the antifreeze is one or more of the following: ethylene glycol, glycerol, and isopropanol; and the defoamer is one or more of the following: dimethyl silicone oil, 4552 defoamer produced by Beijing Xingmeiya Chemical Co., Ltd., and BASF waterborne defoamer.

[0004] Although the above technical solutions improve the corrosion resistance of antifreeze, the antifreeze performance is poor. When the temperature is too low, the antifreeze will shorten the service life of the bearing. More seriously, it may cause the bearing to become brittle, which may lead to safety accidents. Summary of the Invention

[0005] To address the aforementioned problems, and especially the shortcomings of existing technologies, this invention provides a method for preparing antifreeze that can solve these problems.

[0006] To achieve the above objectives, the present invention employs the following technical means:

[0007] A method for preparing an antifreeze, the method comprising the following steps:

[0008] Step 1): By weight, add 60-70 parts water, 20-30 parts ethylene glycol, 2-4 parts heat stabilizer, 3-6 parts scale inhibitor, and 2-5 parts antioxidant to a mixer and stir at 600-800 r / min for 30-50 min until the mixture is homogeneous. Then, heat to 20-55℃ to react and produce product A.

[0009] Step 2): By weight, add 30-40 parts of antifreeze, 3-6 parts of defoamer, 4-8 parts of corrosion inhibitor, and 5-10 parts of emulsifier to a mixer and stir at 800-1000 r / min for 60-80 min until the mixture is homogeneous. Then, heat to 60-70℃ to react and produce product B.

[0010] Step 3): Add product A prepared in step 1) and product B prepared in step 2) into a mixer and stir at 1000-1200 r / min for 30-60 min until they are evenly mixed. Then, heat to 30-60℃ to react and finally obtain the antifreeze.

[0011] A further aspect of the present invention is that the method includes the following steps:

[0012] Step 1): By weight, add 60 parts water, 20 parts ethylene glycol, 2 parts heat stabilizer, 3 parts scale inhibitor, and 2 parts antioxidant to a mixer and stir at 600 r / min for 30 min until the mixture is homogeneous. Then, heat to 20°C to react and produce product A.

[0013] Step 2): By weight, add 30 parts of antifreeze, 3 parts of defoamer, 4 parts of corrosion inhibitor and 5 parts of emulsifier to a mixer and stir at 800 r / min for 60 min until they are evenly mixed. Then, heat to 60℃ to react and produce product B.

[0014] Step 3): Add product A prepared in step 1) and product B prepared in step 2) to a mixer and stir at 1000 r / min for 30 min until they are evenly mixed. Then, heat to 30°C to react and finally obtain the antifreeze.

[0015] A further aspect of the present invention is that the method includes the following steps:

[0016] Step 1): By weight, add 65 parts water, 25 parts ethylene glycol, 3 parts heat stabilizer, 4 parts scale inhibitor, and 3 parts antioxidant to a mixer and stir at 700 r / min for 40 min until the mixture is homogeneous. Then, heat to 35℃ to react and produce product A.

[0017] Step 2): By weight, add 35 parts of antifreeze, 4 parts of defoamer, 6 parts of corrosion inhibitor and 8 parts of emulsifier to a mixer and stir at 900 r / min for 70 min until they are evenly mixed. Then, heat to 65℃ to react and produce product B.

[0018] Step 3): Add product A prepared in step 1) and product B prepared in step 2) to a mixer and stir at 1100 r / min for 50 min until they are evenly mixed. Then, heat to 40℃ to react and finally obtain the antifreeze.

[0019] A further aspect of the present invention is that the method includes the following steps:

[0020] Step 1): By weight, add 70 parts water, 30 parts ethylene glycol, 4 parts heat stabilizer, 6 parts scale inhibitor, and 5 parts antioxidant to a mixer and stir at 800 r / min for 50 min until the mixture is homogeneous. Then, heat to 55℃ to react and produce product A.

[0021] Step 2): By weight, add 40 parts of antifreeze, 6 parts of defoamer, 8 parts of corrosion inhibitor and 10 parts of emulsifier to a mixer and stir at 1000 r / min for 80 min until they are evenly mixed. Then, heat to 70℃ to react and produce product B.

[0022] Step 3): Add product A prepared in step 1) and product B prepared in step 2) to a mixer and stir at 1200 r / min for 60 min until they are evenly mixed. Then, heat to 60℃ to react and finally obtain the antifreeze.

[0023] A further aspect of the present invention is that the water is deionized water.

[0024] A further embodiment of the present invention is that the heat stabilizer is a composition of high-purity urea and potassium nitrate in a mass ratio of 3:2.

[0025] A further embodiment of the present invention is that the scale inhibitor is a composition of sodium polyaspartate and potassium polyglutamate in a mass ratio of 2:1.

[0026] A further embodiment of the present invention is that the antioxidant is a composition of bis(dodecyl) ester and bis(tetradecyl) ester in a mass ratio of 1:1.

[0027] A further embodiment of the present invention is that the antifreeze is a composition of ethylene glycol and dodecyl alcohol ester in a mass ratio of 1:1.

[0028] A further embodiment of the present invention is that the defoamer is a composition of dimethyl silicone oil and BASF water-based defoamer in a mass ratio of 5:3.

[0029] The beneficial effects of this invention are:

[0030] The method for preparing the antifreeze of this invention is simple and easy to operate. The freezing point of the obtained antifreeze can be lowered to -60℃, which has good antifreeze properties and can be used in extremely cold regions. When the temperature is too low, the antifreeze will not shorten the service life of the bearing, will not cause the bearing to become brittle, and will not cause safety accidents. The obtained antifreeze has good stability, anti-wear properties, and anti-corrosion properties, and has a long service life. Detailed Implementation

[0031] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] A method for preparing an antifreeze, the method comprising the following steps:

[0034] Step 1): By weight, add 60 parts of deionized water, 20 parts of ethylene glycol, 1.2 parts of high-purity urea, 0.8 parts of potassium nitrate, 2 parts of sodium polyaspartate, 1 part of potassium polyglutamate, 1 part of bis(dodecyl) ester, and 1 part of bis(tetradecyl) ester to a mixer and stir at 600 r / min for 30 min until the mixture is homogeneous. Then, heat to 20°C to react and produce product A.

[0035] Step 2): By weight, add 15 parts of ethylene glycol, 15 parts of dodecyl alcohol ester, 1.9 parts of dimethyl silicone oil, 1.1 parts of BASF water-based defoamer, 4 parts of corrosion inhibitor, and 5 parts of emulsifier to a mixer in sequence and stir at 800 r / min for 60 min until the mixture is homogeneous. Then, heat to 60℃ to react and prepare product B.

[0036] Step 3): Add product A prepared in step 1) and product B prepared in step 2) to a mixer and stir at 1000 r / min for 30 min until they are evenly mixed. Then, heat to 30°C to react and finally obtain the antifreeze.

[0037] Example 2

[0038] A method for preparing an antifreeze, the method comprising the following steps:

[0039] Step 1): By weight, add 65 parts deionized water, 25 parts ethylene glycol, 1.8 parts high-purity urea, 1.2 parts potassium nitrate, 2 parts sodium polyaspartate, 1 part potassium polyglutamate, 1.5 parts didodecyl alcohol ester, and 1.5 parts ditetradecyl alcohol ester into a mixer and stir at 700 r / min for 40 min until evenly mixed. Then, heat to 35℃ to react and produce product A.

[0040] Step 2): By weight, add 20 parts of ethylene glycol, 20 parts of dodecyl alcohol ester, 2.5 parts of dimethyl silicone oil, 1.5 parts of BASF water-based defoamer, 6 parts of corrosion inhibitor, and 8 parts of emulsifier to a mixer in sequence and stir at 900 r / min for 70 min until the mixture is homogeneous. Then, heat to 65℃ to react and prepare product B.

[0041] Step 3): Add product A prepared in step 1) and product B prepared in step 2) to a mixer and stir at 1100 r / min for 50 min until they are evenly mixed. Then, heat to 40℃ to react and finally obtain the antifreeze.

[0042] Example 3

[0043] A method for preparing an antifreeze, the method comprising the following steps:

[0044] Step 1): By weight, add 70 parts deionized water, 30 parts ethylene glycol, 2.4 parts high-purity urea, 1.6 parts potassium nitrate, 4 parts sodium polyaspartate, 2 parts potassium polyglutamate, 2.5 parts didodecyl alcohol ester, and 2.5 parts ditetradecyl alcohol ester into a mixer and stir at 800 r / min for 50 min until evenly mixed. Then, heat to 55℃ to react and produce product A.

[0045] Step 2): By weight, add 20 parts of ethylene glycol, 20 parts of dodecyl alcohol ester, 3.75 parts of dimethyl silicone oil, 2.25 parts of BASF water-based defoamer, 8 parts of corrosion inhibitor, and 10 parts of emulsifier to a mixer in sequence and stir at 1000 r / min for 80 min until the mixture is homogeneous. Then, heat to 70℃ to react and prepare product B.

[0046] Step 3): Add product A prepared in step 1) and product B prepared in step 2) to a mixer and stir at 1200 r / min for 60 min until they are evenly mixed. Then, heat to 60℃ to react and finally obtain the antifreeze.

[0047] The examples provided in this invention are not intended to limit the implementation. Those skilled in the art will recognize that various variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations, and any obvious variations or modifications derived therefrom are still within the scope of this invention.

Claims

1. A method for preparing an antifreeze, characterized in that, The method includes the following steps: Step 1): By weight, add 60-70 parts water, 20-30 parts ethylene glycol, 2-4 parts heat stabilizer, 3-6 parts scale inhibitor, and 2-5 parts antioxidant to a mixer and stir at 600-800 r / min for 30-50 min until the mixture is homogeneous. Then, heat to 20-55℃ to react and produce product A. Step 2): By weight, add 30-40 parts of antifreeze, 3-6 parts of defoamer, 4-8 parts of corrosion inhibitor, and 5-10 parts of emulsifier to a mixer and stir at 800-1000 r / min for 60-80 min until the mixture is homogeneous. Then, heat to 60-70℃ to react and produce product B. Step 3): Add product A prepared in step 1) and product B prepared in step 2) into a mixer and stir at 1000-1200 r / min for 30-60 min until they are evenly mixed. Then, heat to 30-60℃ to react and finally obtain the antifreeze.

2. The method for preparing an antifreeze according to claim 1, characterized in that, The method includes the following steps: Step 1): By weight, add 60 parts water, 20 parts ethylene glycol, 2 parts heat stabilizer, 3 parts scale inhibitor, and 2 parts antioxidant to a mixer and stir at 600 r / min for 30 min until the mixture is homogeneous. Then, heat to 20°C to react and produce product A. Step 2): By weight, add 30 parts of antifreeze, 3 parts of defoamer, 4 parts of corrosion inhibitor and 5 parts of emulsifier to a mixer and stir at 800 r / min for 60 min until they are evenly mixed. Then, heat to 60℃ to react and produce product B. Step 3): Add product A prepared in step 1) and product B prepared in step 2) to a mixer and stir at 1000 r / min for 30 min until they are evenly mixed. Then, heat to 30°C to react and finally obtain the antifreeze.

3. The method for preparing an antifreeze according to claim 1, characterized in that, The method includes the following steps: Step 1): By weight, add 65 parts water, 25 parts ethylene glycol, 3 parts heat stabilizer, 4 parts scale inhibitor, and 3 parts antioxidant to a mixer and stir at 700 r / min for 40 min until the mixture is homogeneous. Then, heat to 35℃ to react and produce product A. Step 2): By weight, add 35 parts of antifreeze, 4 parts of defoamer, 6 parts of corrosion inhibitor and 8 parts of emulsifier to a mixer and stir at 900 r / min for 70 min until they are evenly mixed. Then, heat to 65℃ to react and produce product B. Step 3): Add product A prepared in step 1) and product B prepared in step 2) to a mixer and stir at 1100 r / min for 50 min until they are evenly mixed. Then, heat to 40℃ to react and finally obtain the antifreeze.

4. The method for preparing an antifreeze according to claim 1, characterized in that, The method includes the following steps: Step 1): By weight, add 70 parts water, 30 parts ethylene glycol, 4 parts heat stabilizer, 6 parts scale inhibitor, and 5 parts antioxidant to a mixer and stir at 800 r / min for 50 min until the mixture is homogeneous. Then, heat to 55℃ to react and produce product A. Step 2): By weight, add 40 parts of antifreeze, 6 parts of defoamer, 8 parts of corrosion inhibitor and 10 parts of emulsifier to a mixer and stir at 1000 r / min for 80 min until they are evenly mixed. Then, heat to 70℃ to react and produce product B. Step 3): Add product A prepared in step 1) and product B prepared in step 2) to a mixer and stir at 1200 r / min for 60 min until they are evenly mixed. Then, heat to 60℃ to react and finally obtain the antifreeze.

5. A method for preparing an antifreeze according to any one of claims 1-4, characterized in that, The water is deionized water.

6. A method for preparing an antifreeze according to any one of claims 1-4, characterized in that, The heat stabilizer is a combination of high-purity urea and potassium nitrate in a mass ratio of 3:

2.

7. A method for preparing an antifreeze according to any one of claims 1-4, characterized in that, The scale inhibitor is a composition of sodium polyaspartate and potassium polyglutamate in a mass ratio of 2:

1.

8. A method for preparing an antifreeze according to any one of claims 1-4, characterized in that, The antioxidant is a composition of dodecyl alcohol ester and dodecyl alcohol ester in a mass ratio of 1:

1.

9. A method for preparing an antifreeze according to any one of claims 1-4, characterized in that, The antifreeze is a composition of ethylene glycol and dodecyl alcohol ester in a mass ratio of 1:

1.

10. A method for preparing an antifreeze according to any one of claims 1-4, characterized in that, The defoamer is a composition of dimethyl silicone oil and BASF water-based defoamer in a mass ratio of 5:3.